Classifies



s. H. BOYLAN.

GLASSIFIER.

APPLICATION man mum. ma.

Patentgd Jan. 6, 1920.

UNITED STATES PATENT oEEIoE.

SAMUEL H. BOYLAN, OF JOPLIN, MISSOURI.

GLASSIFIER.

Specification of Letters Patent.

Patented Jan. 6, 1920.

Application filed June 21. 1918. Serial No. 241.206.

ore bearing rock in the presence of water,

while not necessarily restricted to this use.

An important object of the inventlon 1s to provide reliable and simplemeans to maintain the level of the bed of crushed rock or sand, at aselected height, within the apparatus, such means being operated by theweight of the bed. 7

A further object of the invention is to provide means for supporting theweight of the bed of sand or rock, thereby relieving the outlet valve ofthis load, which might tend to improperly open or clog the same.

Other objects and advantages of the lnventionwill be apparent during thecourse of the following description.

In the accompanying drawings forming a part of this specification and 1nwh1ch l ke numerals are employed to designate like parts throughout thesame,

Figure 1 is a central vertical long1tudmal sectional view throughapparatus embodying my invention, parts bemg shown in elevation, and,

Fig. 2 is a plan view of a supporting plate.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral 5 designates a conicalcasing, decreasing in diameter downwardly. Arranged within the upperlarge end of the conical cas 5 is a vertical ring 6, concentric withrelation thereto. The outer end of th s r1ng is spaced beneath the topof the conical casing 5 and the lower end of the same is rigidly securedto the conical casing 5, as shown at 7. Thering 6 forms with the conicalcas ng 5 an annular overflow space 8, for catching the fine sand, water,or slime, the same dlscharging into an outlet spout or plpe 9, throughan opening 10.

The conical casing 5 is supported by a number of upwardly convergmg rods11, preferably four in number, the lower ends of which pass through theupper ends of the casing 5 and a reinforcing ring 12, secured thereto,and carry nuts 13, as shown. The upper ends of these rods'll areattached to a plate 14, supported by means to be described. The rods llare equipped with turn buckles 15, whereby the rods may belongitudinally adjusted, so that the conical casing 5 may be supportedwith its top horizonta The plate 14. is provided centrally thereof withan opening for the reception of a suspension bolt 16, and the upper endof this suspension bolt passes through an opening in a verticallyswinging lever 17. This lever passes through a suspension block 18, andpivots upon edges 19, as shown. The suspension block 18 is provided withan eye or slot 20, for connection with a cable or other supportingmeans. The lever 17 has a weight 21 longitudinally adj ustably mountedthereon and this weight may be clamped to the lever in any desiredposition by means of a clamping screw 22.

Surrounding the lower end of'the conical casing 5 is a conical sleeve23, rigidly attached thereto, and having an outlet opening 24, incommunication with an outlet opening 25, these two outlet openingsserving as a valve seat, for engagement with a ball valve 26. The ballvalve is screwed to a vertically swinging lever 27 pivoted to astationary support 28, as shown at 29. This support 28 is carried by thesleeve 23. Pivotally connected with the lever 27, as shown at 30, is arod 31, having a turn buckle 32 connected therein. This rod is pivotallyconnected, as shown at 33, with the outer end of the lever 17.

Arranged within the lower end of the conical casing 5 near and above theball valve 26 is a bed supporting plate 34, of smaller diameter than theadjacent portion of the casing 5, but carrying radially extending lugs35, contacting with the wall of the casing 5. The function of this plateis to support the bed or body of sand or ground ore bearing rock,thereby taking the weight of the same from the valve 26.

Arranged above the conical casing 5 is a feed pipe 36, through which theground ore bearing rock and water is fed. There may be any suitablenumber of the conical casings 5 arranged in a row, and the pipe 36 maybe employed to feed all of these casings. Arranged above and centrallyof the upper The operation of the apparatus is as fol lows .. Thecrushed ore bearing rock or sand with water is fed through the pipe 36and discharges into the upper end of the conical casing 5. A. bed of thesandor crushed rock accumulates within the casing 5 and the downwarddischarge of the sand or crushed rock and water, through the downwardlyprojecting nozzle 38, creates a basin or crater 39 at the top of thebed. As the sand or crushed rock and water discharge'into this crater atasubstantial speed, violent cagitation or boiling action occurs.During-this agitatingor boiling action the classification of thedifferent sizes of solid particles occurs. The heavier particlesdescend, while the smaller or lighter particles ascend and dischargewith the water over the edge of the ring 6 into the overflow space 8,and then into the outlet 9. As the amount of larger solid particlescollected in the casing 5 increases, the Weight of the bedaccordinglyincreases and when this weight exceeds a selected limit, which may bedetermined by the. adjustment of the :weight 2.1 longitudinally upon thelever 11, the casing 51descends slightly. This downward movement ofthecasing '5 causes the-opposite end of the lever 11 to rise and for agreater distance, thereby causing the link 31 to be elevated. .This linkswings the lever 2'? upon its pivot and moves the ball valve 28 from itsseat. When the valve is unseated the lower portion of the bed of sand orcrushed rock discharges from the casing 5. This discharge isautomatically stopped when the weight of the bed is restored to theselected point, at which time the weight 21 will overbalance the casing5, thereby restoring the valve 26 to the closed position, as is obvious.It is thus seen that by the adjustment of the weight 21 the weight ofthe bed may be controlled which corresponds with its height. By varyingthe height of the bed or the depth of the crater 39 the finer particlesare made to travel a greater or lesser distance to reach the overflowspace 8 and it is obvious that by varying the depth of the crater, thesize of the solid particles discharging into the space 8 may becontrolled, at will, as thelarger particles willbe retained within thering 6. Y7 hen the apparatusstops operating, the valve 26 is closed, butwhen it is in operation, this valve is partly or wholly open, accordingtothe amount of feed and the amount ofcoarser material in the feed, forthe purpose of maintaining a constant level at the crater. V The coarserproduct discharging through the outlet valve, asses to one set oftables, while the slime from the overflow space 8 passes to othertables. The discharge of both products is continuous duringthe'operation of the machine.

claim:

1. An automatic classifier of the character described, comprisingacasing provided at its lower end with an outlet opening, a singlevertically swinging lever arranged'above the casing, means for pivotallysupporting the single lever at a point arranged near and spaced from theforwardjend thereof, suspension means connecting the forward end of thelever with the casing, a weight ,longitudinally adjustably mounted uponthe rear portion of the lever, means for supplying material to beclassified into the upper end of the casing, a valve to cover anduncover the outlet opening from the exterior of the casing, a verticallyswinging lever carrying the valve and pivoted to the lower end of thecasing to be supported thereby, and a rod pivotally connected with thetwo yers, said levers and rod lying entirely outside'of said casing. I

2. An automatic classifier of the character described, comprising aconical casing pro vided at its lower end with an outletopening, asingle vertically swinging lever arranged above the casing, means forpivotally supporting the single lever ata point arranged near and spacedfrom the forward end thereof, suspension means connecting the forwardend of the lever with the upper end of the casing and serving toentirely support the casing, an upstanding ring held within the upperend of the conical casing and forming an overflow space, anoutlet forthe overflow space, a feed nozzleprojecting downwardly into the top ofthe casing in concentric relation thereto, a valvecto cover and uncoverthe outlet opening from' the exterior of the casing, a verticallyswinging lever carrying the valve, and pivotally connected with thelower end of the casing to be supported thereby a rod pivotallyconnected with the two levers, and a weight adjustably mounted upon thefirst named lever, said levers and said connecting rod lying entirelyoutside of said casing.

3. In a device of the type described, a pivotally supported lever,,aconical casing, a plate arranged coaxially with said casing, a pluralityof rods connecting the upper edge of said casing and saidplate, meansfor securing said plate to one end of said lever,

means for adjusting said rods to maintain for-adjustably connecting theother end of the top of said casing in a horizontal posisaid lever Withthe free end of said pivotally tion, an aperture formed in the lower endsupported lever, and means for preventing 10 of said casing, a valve forclosing said aperthe pressure of the Weight of the contents of ture fromthe exterior of the casing, a lever said casing from bearing on saidvalve.

pivotally secured to said casing and having In testimony whereof I aifixmy signature. one end thereof secured to said valve, means SAMUEL H.BOYLAN.

